Improvement in coffee-mills



NITED STATES PATENT IMPROVEMENT iN COFFEE-MILLS.

Specification forming part of Letters Patent No. 159,467, dated February 2, 1875; application tiled January 2, 1875.

To. all whom it may concern:

Be it known that I, TURNER STRoBRIDGE, of New Brighton, in the county of Beaver and State of Pennsylvania, have invented a new and useful Improvement in Coffee or Spice Mills 5 and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawing, forming a part of this specification, in which- Figure 1 is a vertical section of a coffee-mill embodying my invention. Fig. 2 is an under view of the cover, and Fig. 3 is a perspective view of the hopper.

Like letters refer to like parts whenever they occur.

My invention relates to the construction of coffee or spice grinders; and it consists in suspending the hopper by means of the top of the box and securing it in position by means of screws, which pass through the cover and through lugs or a projecting ange upon the hopper, whereby a covered hopper is obtained and the construction and attachment of the devices simplified; also, in providing the covered hopper with a sliding or movable gate, centered with the shank of the grinding-nut and sliding upon the periphery or flange of the hopper, whereby hinges, springs, or catches are dispensed with and the ga'te slides aside, leaving an unobstructed opening for the admission ofthe article to be ground, and also in providing the Vhopper with projections or points which bite into the cover of the box and prevent the slipping or turning of the hopper, in connection With a cover projecting so as to rest upon the top of the box, and bind upon the upper edge ofthe hopper.

I'will now proceed to describe my invention with reference to the accompanying drawl ing, so that othersskilled in the art may construct and use the same.

A indicates the box with its drawer B of any suitable construction. The top C of the' box is cut away for the admission of the hopper, which I introduce from above, suspending it by means of a projecting flange or lugs on the hopper, and to facilitate the suspension of the hopper I preferably bevel the opening in top G to correspond with the curve of the hopper, as shown at c, which also will diminish the liability of the splitting of the Wood When the screws which secure the cover .are introduced. D represents the hopper or grinding shell, provided with a ange or lugs, d, by which it is suspended upon the top U of the box A, and through which pass the screws g, which hold the hopper down and prevent 1t from turning. The hopper has the. usual grinding-face d', and a series of projections or points, e, which I provide for the purpose of taking hold upon the beveled edge c of the top C, to assist in preventing any movement of the hopper. These points, if suflciently numerous, will, of themselves, prevent achange of position of the hopper. E is the cover having a central opening for the passage of the shank of the grinding-nut, and a sunken or recessed rim for the accommodation of the lugs d, or the iiange of the hopper, so that the lower edge of the cover rests evenly upon the top U, and at the same time binds upon the hopper. This cover E is provided with a sliding gate or door, F, which is pierced, as at f, for the passage of, or made to rest against, the shank of the grinding-nut, upon which it turns or bears, said gate F resting by its lower edge upon the upper edge of the hopper, andsliding or moving within or Without the cover E, so as to be out of the way when the opening in the cover is unclosed. G represents the grinding--nut having a tapering shank, H, which passes through the cover, projecting portion of gate F, and the crank, and is secured above by the usual tightening-nut I.

The devices are put together as follows: The cover and gate are placed upon the hopper, the shank of the grinding nut passed through the hopper, cover, and crank, and secured by the tightening-nut, the lugs or screw-openings in the flange of the hopper are made to register with those in the cover, after which the operative parts are dropped into the opening in the top of the box and secured by al single set of screws, which pass through the cover and lugs or ange of the hopper. The projecting points on the outside of the hopper will bite into the top of the box, and as the cover binds upon the upper edge of the hopper these will, of themselves, if

sufficiently numerous, be sufficient to prevent any movement of the hopper, so that, if desired, the screws need not pass through the ange of the hopper. y j Y The hopper may be suspended, as shown, and the cover replaced by a bridge to support the shank of the grinding-nut, and the grinding shell or hopper and the cover may be secured by a separate set of screws. The lower Vpart of the grinding-shell may be formed with 1.'The hopper and grinding-shell D, provided with points or projections e on its outer surface, in combination with cover E, projecting so as to rest upon the top of the box and `bind upon the upper edge of the hopper, substantially as and for the purpose specified.

2. In coffee or spice mills, the combination of boxl vA, having a top, C, with the hopper D, suspended within the box by means of lugs or projections, which rest upon or take intotop C and a cover, substantially as specified.

A 3. The combination ofthe hopper and grinding-shell D, grinding-nut G, having shank H, and cover E, having a sliding gate or door, F, substantially as and for the purpose specified.

4. The combination of cover E and grindin g-shell or hopper D, the latter provided with lugs or a iange, so that two parts may be secured to the box by a single set of screws, substantially as specified.

In testimony whereof I, the said TURNER STROBRIDGE, have hereunto set my hand.

TURNER STROBRIDGE.

Witnesses:

J. H. LOGAN, ALBERT HOWLETTE. 

